1660 Case Interior Dimensions: 28.18" x 19.75" x 17.62" (71.5 x 50.1 x 44.7 cm). Watertight, crushproof, and dust proof. Easy open Double Throw latches. Open cell core with solid wall design - strong, light weight. O-ring seal. Automatic Pressure Equalization Valve. Large 2-person fold down handles. Stainless steel hardware and padlock protectors. 3 level Pick 'N' Pluck with convoluted lid foam. Personalized nameplate service available. Lifetime Guarantee of Excellence. Retractable extension handle. 4 strong polyurethane wheels with stainless steel bearings. This case has internal wheel and/or handle wells that will reduce usable area. Please review for each application. 1660 Case Certificates: IP67 (1 meter submersion for 30 minutes). Def Stan 81-41/STANAG 4280.